1561126 has 8 divisors (see below), whose sum is σ = 2676240. Its totient is φ = 669048.

The previous prime is 1561123. The next prime is 1561139. The reversal of 1561126 is 6211651.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1561126² = 4874228775752, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1561097 and 1561106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1561121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55741 + ... + 55768.

It is an arithmetic number, because the mean of its divisors is an integer number (334530).

2^1561126 is an apocalyptic number.

1561126 is a deficient number, since it is larger than the sum of its proper divisors (1115114).

1561126 is a wasteful number, since it uses less digits than its factorization.

1561126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111518.

The product of its digits is 360, while the sum is 22.

The square root of 1561126 is about 1249.4502791228. The cubic root of 1561126 is about 116.0056973024.

Adding to 1561126 its reverse (6211651), we get a palindrome (7772777).

The spelling of 1561126 in words is "one million, five hundred sixty-one thousand, one hundred twenty-six".